Suwon Hwaseong Fortress was constructed by king Jeongjo, the 22nd king of Joseon dynasty (1392-1910) after moving the tomb of his father. The Suwon Hwaseong Fortress is a flat and mountainous fortress, which cannot be found in other countries. It was constructed for dual functions ― military defense and commercial functions. With its scientific, rational, and practical structures, it can be called the finest among the fortresses in Asia. It was chosen to be registered as an UNESCO World Heritage in December 1997.